BaYaka hunter-gatherers (IMAGE) University of Zurich Caption BaYaka hunter-gatherers in Congo playing musical instruments and dancing, which helps them to spread cultural traits and specialized vocabulary between different groups. Credit Rodolph Schlaepfer, University of Zurich Usage Restrictions none License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.